String The type of Transformer
Options: tf_asset_category = c("30kV Transformer (GM)",
"60kV Transformer (GM)").
prox_water
Numeric. Specify the proximity to a water course in meters.
A setting of "Default" will result in a proximity factor of 1. Thus
assume the proximity to a water course is between 80m and 120m
bunded
String. Options: bunded = c("Yes", "No", "Default").
A setting of "Default" will result in a bunding factor of 1.